[From Monographie du Genre Rosier, by Auguste de Pronville, p. 147:] Among specific collections, that of the château de Malmaison, which was created by Dupont and which was one of the most significant, is to be mentioned; it accrued species and varieties which M. Kennedy sent from England.[From La Rose de France, by Francois Joyaux, p. 52:] Two roses were named for André Du Pont (1756-1817). R. dupontii (which is still around) and 'Rosier Du Pont' (which is extinct).

[From The Old Rose Informant, by Brent C. Dickerson, p. 24: in 1824, Vibert wrote:] Vilmorin père and Dupont are the ones who [in France] began to collect [roses]...